Finding the Fourth Proportional to 2,576.46, 3,555.39 and 1,528.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,576.46 : 3,555.39 = 1,528.50 : x
2. Step 2: Convert to fraction form
   2,576.46/3,555.39 = 1,528.50/x
3. Step 3: Cross multiply
   2,576.46x = 3,555.39 × 1,528.50
4. Step 4: Simplify right side
   2,576.46x = 5,434,413.62
5. Step 5: Solve for x
   x = 5,434,413.62/2,576.46
6. Step 6: Final answer
   x = 2,109.26